68023838609 has 8 divisors (see below), whose sum is σ = 69362865000. Its totient is φ = 66686870016.

The previous prime is 68023838527. The next prime is 68023838611. The reversal of 68023838609 is 90683832086.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 33719242384 + 34304596225 = 183628^2 + 185215^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68023838609 - 2¹² = 68023834513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68023838689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 447602 + ... + 579995.

It is an arithmetic number, because the mean of its divisors is an integer number (8670358125).

Almost surely, 2^68023838609 is an apocalyptic number.

It is an amenable number.

68023838609 is a deficient number, since it is larger than the sum of its proper divisors (1339026391).

68023838609 is a wasteful number, since it uses less digits than its factorization.

68023838609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028899.

The product of its (nonzero) digits is 2985984, while the sum is 53.

The spelling of 68023838609 in words is "sixty-eight billion, twenty-three million, eight hundred thirty-eight thousand, six hundred nine".